Tonight, look for a constellation that’s easy to see on the sky’s dome, if your sky is dark enough. Corona Borealis – aka the Northern Crown – is exciting to find. It’s an almost-perfect semi-circle of stars. This beautiful pattern will adorn the evening sky from now until October.

The constellation Corona Borealis is located more or less along a line between two bright stars, Arcturus in the constellation Bootes the Herdsman and Vega in the constellation Lyra the Harp. At nightfall and early evening, you’ll see Arcturus fairly high in the east to northeast, noticeable for its brightness and yellow-orange color. Vega will be rather low in northeast – bright and blue-white in color. The Northern Crown is more or less between these two bright stars. It’s a semi-circle of stars – very noticeable in a dark sky.

The brightest star in Corona Borealis is Alphecca, also known as Gemma, sometimes called the Pearl of the Crown. The name Alphecca originated with a description of Corona Borealis as the “broken one,” in reference to the fact that these stars appear in a semi-circle, rather than a full circle. Alphecca is a blue-white star, with an intrinsic luminosity some 60 times that of our sun. It’s located about 75 light-years from Earth.

Bottom line: Look for Corona Borealis – the Northern Crown – between the brilliant stars Arcturus and Vega tonight! This constellation is very noticeable, if you have a dark sky.

Deborah Byrd created the EarthSky radio series in 1991 and EarthSky.org in 1994. Today, she serves as Editor-in-Chief of this website. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named 3505 Byrd in her honor. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says.